Wind vane



FIG. 1 is an front perspective view of the wind vane showing my design.

FIG. 2 is a front view thereof;

FIG. 3 is a side view thereof; and,

FIG. 4 is a top view thereof.

The features presented in broken lines are illustrative of a windmill to which the wind vane is attached and form no part of the claimed design. 

The ornamental design for a wind vane, as shown and described. 